Safety-envelop



No. 608,583. Patented Aug. 9, I898. F. C. CUCKSON. SAFETY ENVELOP.

(Application filed Nov. 19, 1897.)

(No Model.)

n Lb e sgae s? adaw "km Q 'W UNITED STATES PATENT OF ICE,

FREDRIQK c. oUoKsoiv, or MALONE, NEW YORK.

SAFETY- E-NVELO P.

SFECIFJECATION forming part of Letters Patent No. 608,583, dated August 9,1898. A li ti fil d November 19, 1897. Serial No. 659,108. (No model.)

To all whom it may concern/.-

Be it known that I, FREDRICK O. CUGKSON, a citizen of the United States, residing at Malone, in the county of Franklin and State of New York, have invented a new and useful Improvement in Safety-Envelops,of which the following is a full, clear, and exact specification. Y

My invention relates to a new and useful improvement in safety-envelops, and has for its object to provide an exceedingly simple and efiective deviceof this description which will effectually prevent the unlawful tampering with the letter Without easy detection thereof. V

With this end in view this invention consists in the details of construction and combination of elements hereinafter set forth,and then specifically designated by the claim.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, the construction and operation will now be described in detail, referring to the accompanying drawings, forming a part of this specification, in which Figure 1 is a rear view of an envelop made in accordance with my improvement, the closing-flap being shown in an open position, while the gummed tongue of the lower fiap is shown in dotted lines as beingpassed through the slits formed in the side flaps; Fig. 2, a similar view showing both the upper and lower flaps opened; Fig. 3, a central crosssection of Fig. 1; Fig. 4, a similar view showing the closing-flap in its closed position and Fig. 5a perspective illustrating the methods of sealing the envelop by passing the safetytongue of the closing-flap through the slits in the side flaps.

In carrying out my invention as here embodied I cut the envelop-blank in the usual manner, forming the bodyA, end flaps B, lower flap O, and upper or closing fiap D, the two' latter flaps having tongues E and F formed therewith. In the formation of the blank, slitsGare formed therein, as clearly shown in Fig. 2, so that when these two flaps are folded in position these slits register with each other and are for the .passage of the tongues E and F, as will be hereinafter set forth.

The tongue E is gummed upon its upper.

has been accomplished the outer surface of the tongue F is moistened and also passed through the slits G, so as to lie beneath the tongue E, and the moisture thereon will cause it to adhere to the last-named tongue, thereby securely sealing the envelop and avoiding the possibility of the same being opened without affording means for easy detection by the most casual observer. I

It is obvious. that an envelop thus mad and sealed precludes the possibility of access being had to the adhesive surfaces, since these are upon the inside of the envelop and therefore cannot be acted uponto cause their disengagement.

If desired, when the envelop is manufactured the lower flap may be sealed along the edges I and the tongue E passed through the slits G, so that when using the envelop it will only be necessary to place the letter therein through the upper flap, moisten the outer surface of the tongue F, and pass it through the slits Gto seal the letter.

One of the principal advantages of myimprovement is the fact that the cost of manufacture is not increased over the ordinary envelop, while absolute safety is had against unauthorized tampering with the letter without plainly showing that such has been attempted. Of course I do not wish to be limited to the exact design here shown, as myimprovement may be utilized in connection with any size or style of envelop.

Having thus fully described my invention, what I claim as new and useful is- A safety-envelop consisting of a body, two end flaps having slits therein adapted to register when folded, a bottom flap having a tongue formed therewith adapted to pass through said slits and turn backwards-and downward upon itself, gum beingappli'edto the outer surface thereof prior to its inser- In testimony whereof I have hereunto af- Mon through said slits, and EL closingfiap also fixed my signature in the presence of two suh- IO having a tongue formed therewith adapted scribing witnesses.

l b b (T L A v p L w v W 4 F0 puss UllOll h squl sl ts 1nd beneuth the FRED O CUCIBON llSL-llfLlUGd tongue, so that when moistened prior to its insertion. will cause an adhesion Vitnesses: between. the two tongues, as and for the pur- L. L. MEMOE,

pose set forth. ll. 1 RENNIE. 

